Method and apparatus for remotely inserting watermark into encrypted compressed video bitstream
US8611531B2 · kind B2 · utility
5Cited by
1References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Apr 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8358
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for remote watermarking of a media program is disclosed. The method inserts a pattern of substituted second versions of media program portions that are invisible to the viewer, into reproduced copies of the media program. The method permits the watermarking of encrypted media programs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.